must invent
Verbe régulier : invent - invented- invented
Traduction française : inventer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must invent
you must invent
he must invent
we must invent
you must invent
they must invent 	I must be inventing
you must be inventing
he must be inventing
we must be inventing
you must be inventing
they must be inventing	I must have invented
you must have invented
he must have invented
we must have invented
you must have invented
they must have invented	I must have been inventing
you must have been inventing
he must have been inventing
we must have been inventing
you must have been inventing
they must have been inventing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't invent
you mustn't invent
he mustn't invent
we mustn't invent
you mustn't invent
they mustn't invent 	I mustn't be inventing
you mustn't be inventing
he mustn't be inventing
we mustn't be inventing
you mustn't be inventing
they mustn't be inventing	I mustn't have invented
you mustn't have invented
he mustn't have invented
we mustn't have invented
you mustn't have invented
they mustn't have invented	I mustn't have been inventing
you mustn't have been inventing
he mustn't have been inventing
we mustn't have been inventing
you mustn't have been inventing
they mustn't have been inventing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I invent?
must you invent?
must he invent?
must we invent?
must you invent?
must they invent? 	must I be inventing?
must you be inventing?
must he be inventing?
must we be inventing?
must you be inventing?
must they be inventing? 	must I have invented?
must you have invented?
must he have invented?
must we have invented?
must you have invented?
must they have invented? 	must I have been inventing?
must you have been inventing?
must he have been inventing?
must we have been inventing?
must you have been inventing?
must they have been inventing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I invent?
mustn't you invent?
mustn't he invent?
mustn't we invent?
mustn't you invent?
mustn't they invent? 	mustn't I be inventing?
mustn't you be inventing?
mustn't he be inventing?
mustn't we be inventing?
mustn't you be inventing?
mustn't they be inventing? 	mustn't I have invented?
mustn't you have invented?
mustn't he have invented?
mustn't we have invented?
mustn't you have invented?
mustn't they have invented? 	mustn't I have been inventing?
mustn't you have been inventing?
mustn't he have been inventing?
mustn't we have been inventing?
mustn't you have been inventing?
mustn't they have been inventing?